Temperatures will peak in the upper 80s on Monday in the Portland area as a high-pressure system, that has brought extreme heat in more southern states, continues to warm the local region, according to the National Weather Service.

That pressure system has pushed temperatures higher than average for this time of year in some areas, according to the weather service's forecast discussion. A weak cold front will arrive Tuesday morning bringing a 30 percent chance of light rain or a drizzle.

Temperatures will cool off a bit bringing them close to seasonal averages at least until Thursday. Mostly sunny skies will dominate the week with temperatures peaking in the high 70s.

Temperatures return to the 80s on Friday and will linger over the weekend.